Marina Kushner (inset, in her mugshot) sold bogus vouchers for community service on her website. Photo: Shutterstock (main)

A Florida scam artist pleaded guilty Thursday in ​a ​Manhattan court to selling bogus ​letters attesting to ​community​ ​service ​on behalf of convicts across the country — and then got sentenced to community service herself.

Admitted coffee-addict Marina Kushner, 47, used the sites quickcommunityservice.com and fastcommunityservice.com to sell the fake certificates claiming defendants had completed a certain number of hours volunteering for her company the Caffeine Awareness Association.

Defendants were able to dodge hundreds of hours of work by paying a fee and completing a brief quiz, prosecutors said.

As part of the no-jail plea deal, the creative con artist copped to offering a false instrument for filing. She must pay a 5,000 fine, do 300 hours of legitimate community service, take down the websites and serve five years of probation.

The Manhattan District Attorney’s Office got wind of the scam when convicted thief Danielle Anderson submitted one of the counterfeit letters last March.